Evening primrose oil and celecoxib inhibited pathological angiogenesis, inflammation, and oxidative stress in adjuvant-induced arthritis: novel role of angiopoietin-1

Inflammopharmacology
R M El-SayedM F El-Azab

Abstract

Rheumatoid arthritis is a chronic inflammatory disease characterized by overproduction of inflammatory mediators along with undermined oxidative defensive mechanisms. Pathological angiogenesis was found to play a critical role in the progression of this disease. The current study was carried out to evaluate the anti-angiogenic, anti-inflammatory, and anti-oxidant effects of evening primrose oil (EPO), rich in gamma linolenic acid (GLA), either alone or in combination with aspirin or celecoxib, on adjuvant-induced arthritis. Arthritis was induced by subcutaneous injection of complete Freund's adjuvant (CFA) in the right hind paw of male albino rats. All treatments were administered orally from day 0 (EPO, 5 g/kg b.w.) or day 4 (celecoxib, 5 mg/kg; aspirin, 150 mg/kg) till day 27 after CFA injection. In the arthritic group, the results revealed significant decrease in the body weight and increase in ankle circumference, plasma angiopoietin-1 (ANG-1) and tumor necrosis factor-alpha (TNF-α) levels. Anti-oxidant status was suppressed as manifested by significant decline in reduced glutathione content along with decreased enzymatic activity of superoxide dismutase and increased lipid peroxidation. Oral administration of EPO exerted n...Continue Reading

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Apr 22, 2017·Medical Science Monitor : International Medical Journal of Experimental and Clinical Research·Kewen ZhengWanli Zhang

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